a special place in a special time

travelling

There is normally no reason why you can't fly, unless of course you have developed a medical condition such as preeclampsia. Most airlines set a "cut off" time of around 32 weeks (this varies with each airline) after which they will not allow you to travel. This is because of the (albeit remote) risk of you going into labor on board the airplane. Also, long haul flights are extremely uncomfortable after about 24 weeks.